Abstract: Disclosures of roller tube grill temperature control assemblies and methods for human food have a sensing device to fit between a pair of tubes with sides that conform to the tube surface, and an associated temperature-sensing component for detecting the sensing device temperature. An electrical control arrangement in electrical connection with a heating element disposed within a tube can control electricity, with mechanisms to modify the set point. A biasing member biases the sensing device. Such device can also have on or more tube receiving inner openings located between the sides of the device. The sensing device can further be a bushing with one or more generally cylindrical openings to receive roller tube or tubes. The assembly moreover can have an infrared sensing device associated with a tube to sense radiation therefrom for detecting temperature.

Abstract: A vending machine includes a product compartment, a duct opening into the product compartment, and a self-contained refrigeration system. The refrigeration system includes a housing having a first chamber and a second chamber. The first chamber includes first and second openings. The second chamber includes third and fourth openings. An evaporator coil and evaporator fan are mounted in the first chamber. The evaporator fan moves air from the first opening, through the evaporator coil, to the second opening. A condensing coil, compressor, and compressor fan are mounted in the second chamber. The compressor fan moves air from the third opening, through the condensing coil, over the compressor, to the fourth opening. The housing thermally insulates the first chamber from both the second chamber and an exterior of the housing.